/**
 * Copyright 2011 rkehoe
 * 
 * Licensed under the Apache License, Version 2.0 (the "License"); you may not
 * use this file except in compliance with the License. You may obtain a copy of
 * the License at
 * 
 * http://www.apache.org/licenses/LICENSE-2.0
 * 
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
 * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
 * License for the specific language governing permissions and limitations under
 * the License.
 * 
 */
package example.domain.objects;

import java.util.Collections;
import java.util.EnumSet;
import java.util.Random;
import java.util.Set;

/**
 * @author rkehoe
 *
 */
public enum Manufacturer
{
	Ford,Fiat,Audi,Mercedes,Citroen,Nissan,Farrari,Volkswagon,Renault;

	public static Set<Manufacturer> ALL_MANUFACTURERS;
	static
	{
    	EnumSet<Manufacturer> allOf = EnumSet.allOf(Manufacturer.class);
    	ALL_MANUFACTURERS = (Set<Manufacturer>) Collections.unmodifiableSet(allOf);		
	}

    public static Manufacturer random()
    {
    	Manufacturer[] random = ALL_MANUFACTURERS.toArray(new Manufacturer[0]);    	
    	int item = new Random().nextInt(random.length);
	    return random[item];
    }
    
    public static Manufacturer not(Manufacturer m)
    {
    	EnumSet<Manufacturer> allOf = EnumSet.allOf(Manufacturer.class);
    	allOf.remove(m);
    	Manufacturer[] randomManufacturer = allOf.toArray(new Manufacturer[0]);    	
    	int item = new Random().nextInt(randomManufacturer.length);
	    return randomManufacturer[item];
    }
}
